Multi-Classed Character

Players Handbook (page 32)

The game assumes that only non- or semi-human characters can be multi-classed, and only certain class combinations are possible, depending on the race of the character. Although these are listed in the section dealing with each race of character, multi-class character possibilities are also shown below in order to aid in selection of your character's class or multi-class. Cleric combinations (with fighter types) may use edged weapons.

House Rule

Update

I have decided that there are scenarios for muilti-class to occur as player characters. These are:

• Elf - Fighter / Thief

Ther assumption is not so much that they are thieves, but that they have the necessary skills to performing thief/rogue tasks.

There are no multi-class variants available for player characters in the campaign. Players should choose a single class to begin with. Multi classes will be considered extremely diluted variants of the two classes. ie they will be worse off having not specialised in a single set of skills.
I will consider evolving a charcter with skills from another class at a later stage in their character career, but think the challenge of role-playing within the boundaries of one class should be compelling enough.